Process of rolling steel or iron



(No Model.)

A.'J. MOXHAM.

PROCESS OF ROLLING STEEL OR IRON.

Patented Au 13, 1889.

Li 3 b m c l m I pressure or force of any desired extent during the samedirection as that ofthe surface mo- UNITED STATES PATENT OFFICE.

ARTHUR J. MOXHAM, OF JOHNSTOWVN, PENNSYLVANIA.

PROCESS OF ROLLING STEEL OR IRON.

SPECIFICATION forming part of Letters Patent No. 408,843, dated August13, 1889.

Serial No. 297,557. (No model.)

To all whom it may concern.-

Be it known that I, ARTHUR J. MOXHAM, of .Iohnstown, county of Cambria,and State of Pennsylvania, have invented a new and use ful Improv'ementin the Process of Rolling Iron or Steel, of which the following is atrue and exact description, due reference being had to the drawingswhich accompany and form part of this application, and in which similarletters denote similar parts.

Heretofore the process of rolling these metals consisted in passing themthrough a pair of rolls grooved to the conformation desired. The pieceis made to pass through said rolls by the adhesion or bite of the rollswhen the rotary movement is given to the rolls. The piece is thus fed inand travels with a speed due to the surface velocity of therolls. I havediscovered that I can produce a difference of extent in the actions ofthe rolls upon a piece of met-a1 passed through if I exert a force uponthe piece in its passage through the rolls, said force being in thedirection of the surface motion imparted by the rolls, instead ofpassing it through the rolls, unaccelerated, with the surface motion ofthe rolls.

My improvement consists in exerting a the movement of the piece throughthe rolls in tion imparted by the rolls. I carry out this process by theaddition to the ordinary system of rolls of mechanism which will exert aforce upon the piece during its passage through the rolls in the samedirection as that of the surface motion of the rolls, so that while thespreading and elongation of the piece are effected by the rolls thepiece will not pass through the rolls simply by the surface motionimparted by the rolls. Various mechanisms can be used to accelerate thepassages of the piece, one form of which is shown in this application.

In the drawings, Figure 1 is a general side elevation showing pair offorming-rolls of any desired conformation, the piece to be acted upon,and the mechanism by which the piece is acted uponby the desiredaccelerat ing force. Fig. 2 is a front elevation in detail from line as.90 in direction of arrow; Fig. 3, a section on lines y 3 Fig. 2.

R R are the for1ning-rolls, of any desired conformation.

N N are the delivery or feeding rolls, by the movement of which thepiece is brought to the entrance of the forming-rolls.

B is a frame of sufficient solidity mounted on the wheels B, whichwheels rest and travel upon the tracks 0. Projecting from and secured tothis frame B is a support D, (Z being rods to strengthen or brace thissup port. Securely suspended in-this support D is the pair ofgripping-rolls E F, the roll E being set true, while the roll F isslightly eccentric.

K K are the upper. collars of these rolls, provided with a series ofholes 7c.

H is a project-ion from the frame B and rigidly secured thereto. h is awire rope or cable of sufficient strength, which is secured to saidprojection and passes over the drum I.

J is a cylinder having the piston-head j and piston j.

9' is a cable or chain connecting the piston with the drum H.

G is a valve for admitting water or steam from the source ofpressure-supply to either side of the piston-head by pipes g g.

L is the piece to be acted upon.

The operation is as follows: The piece to be acted upon is gripped atits rear end be tween the rolls E and F and its front end brought inline with the mouth of the forming-rolls. mitted to the cylinder and thepiston caused to travel in the direction denoted by the arrow. The frameB is pulled forward upon the track 0 by the action of the piston on thedrum H, which drum, being of large size, causes the frame B to move witha greater or less force, dependent upon the size of the drum and thepressure on the piston-head, and the piece is thus caused to. passthrough the rolls with a force exerted upon it in the direction of thesurface motion imparted by the rolls rotation. hen the piece has passedalmost entirely through the rolls, the frame B strikes the projection Mat the side of the track 0 and stops the further movement of the frame,and the rolls R R pull the piece from between the gripping-rolls and itentirely passes through the rolls. The Valve The steam or water is thenad- ICO may be changed automatically at this point or by any means andthe water or steam admitted to the other side of the piston-head, whenthe Weight \V,aetin g through the drum V and cord or chain X, willreturn the frame to its initial point and in position for furtheraction, (the frame I) on its forward movement having raised this Weight\V.) The Weight \V, as may be readily understood, is very light, and itis only necessary that it shall be sufficient to return the framel Byvarying the size of the drum or the pressure of water or steam in thecylinder a greater or less force maybe exerted upon the piece. By

my improved process of rolling I am enabled to obtain different andimproved results and to vary the results of the roll action upon anygiven portion of the piece.

It is obvious that many different mechanisms may be used to carry outthis process of rolling, and I do not intend to limit myself tothehereinbeforealescribed mechanism or any particular 1n echanism.ltisalso obvious that the mechanism can be located in front of the mainrolls and exert its accelerating action by a pull, instead of beinglocated behind the same and doing so by a push; but

What I claim is- An improved process of rolling n1etal,\vhich consistsin exerting a pressure or force upon the piece in the direction of thesurface motion imparted by these rolls during the passage of the piecethrough the rolls.

In testimony of which invention. 1 have hereunto set my hand, atJohnstown, county of Cambria, State of Pennsylvania, this 18th day ofJanuary, 1881).

ARTHUR J. MOXIIAM.

\Vitnesses:

